Goto Markdown Section

script

//
// Goto markdown section
//

(() => {
    const getMarkdownHeaders = function (s) {
        let m = new Map();
        m.set("Start of Draft", 0);

        let pos = 0;
        for (let l of s.split('\n')) {
            let match = l.match(/\s*(#+.*)/);
            if (match) {
                // make button label unique with trailing spaces
                let h = match[1];
                while (m.has(h)) {
                    h = h + ' ';
                }

                m.set(h, pos);
            }
            pos += l.length + 1;
        }
        m.set("End of Draft", pos);
        return m;
    }

    let p = Prompt.create();
    p.title = "Goto Section";

    let headers = getMarkdownHeaders(draft.content);
    headers.forEach((v,k,m) => p.addButton(k));

    if (p.show()) {
        editor.activate();
        editor.setSelectedRange(headers.get(p.buttonPressed), 0);
    }
})();